Notice the first line and the third line are not indented. But, the second one is indented and has an escape \ before it already.
This is a good attempt.
However, I suggest looking at the list provided for us to use.
You may wish to consider using a tab before the SecondLine along.
As well, I think you meant to type \n before ThirdLine
Make sure the code does not include anything outside of the quotation marks, not any ; nor anything else.